The burn-time of rechargeable batteries varies.

Burn-time is affected by:

(A) –Operating temperature – Do not use at highly elevated temperatures for extended periods of time.

(B) – Storage temperature – Store in a cool and dry place at room temperature (20-25° Celsius/ 68-77° Fahrenheit).

(C) –Time period the light was out of use.  For extended storage, discharge a lithium-ion battery to about 40 percent (or approximately 1 hour on a fully charged battery) and store it in a cool, dry place. Warning: always take batteries out of light when storing longer than 30 days.

(D) –Avoid completely discharging lithium ion batteries – Battery experts suggest that after 30 charges, you should allow lithium-ion batteries to almost completely discharge. Continuous partial discharges create a condition called digital memory, decreasing the accuracy of the device’s power gauge. So let the battery discharge to the cut-off point and then recharge. The power gauge will be recalibrated. For safety reasons, do not recharge deeply discharged lithium-ion batteries if they have been stored in that condition for several months

(E) –Use of used/low quality rechargeable batteries.



WARNING: DO NOT RECHARGE THE BATTERY NEAR FLAMMABLE ITEMS AND/OR PRODUCTS.  Do not leave in the charger for more than 12 hours.

  • Unscrew the end cap.
  • Take out the battery and place into charging unit with correct polarity.
  • A red LED indicates that the torch is charging.
  • When charging is complete, the green LED switches on.
  • Place the battery back into light, positive side first.
  • Fully screw down the end cap.


WARNING: When using rechargeable lithium ion batteries use only Tovatec brand batteries or batteries sold by major manufacturers that have the same voltage, mAh and watt hour ratings as original batteries.  Batteries must include over / under voltage protection circuit.



When using alkaline and rechargeable alkaline batteries use only major brand batteries.  Batteries must not exceed 1.5 Volts.  Always replace batteries in complete sets, do not mix old batteries with new batteries.



Rechargeable lithium ion batteries as well as alkaline and rechargeable alkaline batteries must all be disposed of or recycled in compliance with all applicable laws.  Never throw into a fire, as batteries may explode.  Keep batteries away from children



  • Remove the batteries if the light will not be used for long periods or during transport.
  • If you anticipate extended periods of no use, recharge the battery every 3 months.
  • Make sure the end cap is closed tightly before each dive.
  • Never point the light directly into eyes.


Battery Regulations

There are many regulations with shipping or traveling with lithium ion or lithium metal batteries. Please visit this link for SOME of the regulations. It is best to look for the latest regulations if you are planning to ship or travel with batteries.